 +_____________________________________________________________________
  AUTHOR:                                          DR:              
  C. WOHL               PASS REQUIREMENT WAIVER           104404    
 ____________________                             __________________
  ORG/PHONE:          WAIVER ONLY ( )              DATE:  02/20/91  
  SSOAS/(281)335-2197 WAIVER/OPS NOTE (X)          REV E: 12/04/97  
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  OI/FLIGHT EFFECTIVITY:          USER AFFECTED:                     
   OI-22 THRU OI-28               CREW (X)  GROUND (X)  DUMP ONLY ( )
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         MAJOR SOFTWARE AREA:        OPS MODES AFFECTED:             
 SSW (X)  GNC ( )  VU ( )  SM/PL ( )    G9, G1                       
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  SOFTWARE SUB-AREA: I/O, FTS                                         
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  PRINCIPAL FUNCTIONS: SBIO                                           
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  TITLE:  LOSS OF REDUNDANT SET I/O ERROR INFORMATION                 
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  REQUIREMENT TO BE WAIVED:                                           
                                                                      
                                                                      
   "THE REPORTING OF AN ERROR CONDITION ON I/O COMPLETION SHALL       
   INITIALLY BE ACCOMPLISHED VIA A SPECIFIC SYNC CODE PATTERN OUTPUT. 
   ... SPECIFIC PROTECTED TRANSACTIONS REQUIRE ADDITIONAL INFORMATION 
   ON THE DATA STATUS.  THIS INFORMATION IS REQUIRED IN ORDER TO MARK 
   THE SPECIFIC ERRORED DATA FOR APPLICATIONS SOFTWARE AND TO         
   ISOLATE THE ERROR SOURCE WHEN ELIMINATION IS APPROPRIATE.  THIS    
   INFORMATION SHALL BE COORDINATED AMONG THE PARTICIPATING GPCS VIA  
   AN ICC TRANSACTION IMMEDIATELY FOLLOWING THE DETERMINATION THAT    
   THE TRANSACTION ERRORED VIA THE IPR SYNC."                         
                                                                      
                                                                      
                                                                      
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 REQUIREMENTS DOC:                    PARAGRAPH AND/OR SECTION NO:   
     LEVEL A CPDS 170                   4.6.3.1.8                    
                                                                     
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 ALTERNATE REQUIREMENT BEING MET, IF APPLICABLE:                      
                                                                      
  THIS REQUIREMENT IS MET IN ALL CASES EXCEPT WHEN A LOW PRIORITY     
  COMMFAULTABLE I/O COMPLETION IS INTERRUPTED BY A TIMER WHICH STARTS 
  HIGHER PRIORITY I/O THAT THEN IN TURN COMPLETES WITH A FAKE MSC     
  TIMEOUT OR PSEUDO TIMEOUT.                                          
                                                                      
                                                                      
 _____________________________________________________________________
 CONCURRENCE:                           APPROVAL:                    
 SSOAS:   JOHN MAGLEY      DATE 01/13/98                             
       ------------------      ---------                             
 ASD:    W. R. PRUETT      DATE 01/23/98                             
       ------------------      --------- DARRELL E. STAMPER 01/26/98 
 PF MGR: KAYLENE F. KINDT  DATE 01/20/98------------------- -------- 
        ------------------     --------- CHAIRMAN, SASCB      DATE   
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