 +_____________________________________________________________________
  AUTHOR:                                          DR:              
   MONTY QUEENER        PASS REQUIREMENT WAIVER         104798      
 ____________________                             __________________
  ORG/PHONE:          WAIVER ONLY ( )              DATE:  02/11/91  
   IBM/282-7750       WAIVER/OPS NOTE (X)          REV A: 06/10/91  
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  OI/FLIGHT EFFECTIVITY:          USER AFFECTED:                     
   OI8C THRU OI22                 CREW (X)  GROUND (X)  DUMP ONLY ( )
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         MAJOR SOFTWARE AREA:        OPS MODES AFFECTED:             
 SSW (X)  GNC ( )  VU ( )  SM/PL ( ) G1, G2, G3, G6, G8, G9          
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  SOFTWARE SUB-AREA:  MMU, I/O                                        
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  PRINCIPAL FUNCTIONS:  SDPS                                          
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  TITLE:                                                              
          POSSIBLE RS MMU I/O ERROR                                   
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  REQUIREMENT TO BE WAIVED:                                           
                                                                      
  THE IMPLIED REQUIREMENT THAT IOP PROGRAMS SHOULD ALLOW FOR THE      
  MAXIMUM POSSIBLE "SKEW" BETWEEN REDUNDANT SET GPCS WITHOUT          
  EXPOSING THE I/O OPERATIONS TO UNNECESSARY I/O ERRORS.              
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
 _____________________________________________________________________
 REQUIREMENTS DOC:                    PARAGRAPH AND/OR SECTION NO:   
   LEVEL A CPDS 170                     N/A                          
                                                                     
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 ALTERNATE REQUIREMENT BEING MET, IF APPLICABLE:                      
                                                                      
  ALL IOP PROGRAMS WITH THE EXCEPTION OF MASS MEMORY READ WITH        
  CHECKSUM AND MASS MEMORY OPS OVERLAY READS CONTAIN SUFFICIENT       
  MARGIN TO PREVENT THIS SITUATION.                                   
                                                                      
                                                                      
                                                                      
 _____________________________________________________________________
 CONCURRENCE:                           APPROVAL:                    
 IBM:  CHARLES HALLIMAN    DATE 07/02/91                             
     --------------------      ---------                             
 FDSD:  ROBERT N. HINSON   DATE 07/03/91                             
      -------------------      --------- DARRELL E. STAMPER 07/08/91 
 PF MGR:ELIZABETH FOUNTAIN DATE 07/02/91------------------- -------- 
        ------------------     --------- CHAIRMAN, SASCB      DATE   
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