 +_____________________________________________________________________
 ] AUTHOR:            ]                             ] DR:              ]
 ] P. TICE            ]    PASS PROGRAM NOTE        ]       45215      ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE: SEPT. 1987 ]
 ] LSIS/282-7297      ]      RELEASE NOTE( )        ] REV B: 09/01/95  ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ]   OI-25 AND SUBS              ]  CREW ( )  GROUND (X)  DUMP ONLY (X)]
 ]_______________________________]_____________________________________]
 ]        MAJOR SOFTWARE AREA:       ] OPS MODES AFFECTED:             ]
 ]SSW (X)  GNC ( )  VU ( )  SM/PL ( )] 0, G1, G2, G3, G6, G8, G9, S2,  ]
 ]                                   ] S4, PL9                         ]
 ]_____________________________________________________________________]
 ] SOFTWARE SUB-AREA: UPLINK, LDB                                      ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS: SULK                                           ]
 ]_____________________________________________________________________]
 ] TITLE:                                                              ]
 ] G-MEM CONTIGUOUS AND G-MEM SCATTER RESTRICTIONS                     ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]                                                                     ]
 ] AN UPLINK G-MEM CONTIGUOUS ACROSS SECTOR BOUNDARY WILL RESULT IN AN ]
 ] ERRONEOUS UPDATE OF MEMORY, DUE TO THE TURNING ON/OFF OF THE MSB OF ]
 ] THE 16-BIT ADDRESS (WHICH DETERMINES WHETHER TO INCLUDE THE DSR AS  ]
 ] PART OF THE AP101 ADDRESS) WHEN CROSSING SECTOR BOUNDARIES.         ]
 ]                                                                     ]
 ] COMMAND WORD ONE OF THE G-MEM SCATTER LOAD CONTAINS A DESIGNATION   ]
 ] (BITS 17, 31-32) OF THE MSB'S TO BE USED IN CONJUNCTION WITH THE    ]
 ] ADDRESS SPECIFIED IN BITS 17-32 OF COMMAND WORD TWO. SINCE THE SAME ]
 ] MSB IS USED FOR ALL ADDRESSES IN ANY ONE G-MEM SCATTER UPDATE, EACH ]
 ] G-MEM SCATTER IS RESTRICTED TO AREA OF MEMORY WHICH IS INDICATIVE   ]
 ] OF ITS PARTICULAR MSB SETTING. (MSB 0 RANGE IS 0-FFFF; MSB 1        ]
 ] RANGE IS 10000-1FFFF; MSB 2 RANGE IS 20000-2FFFF;... MSB 7 RANGE IS ]
 ] 70000-7FFFF). THEREFORE, AN ATTEMPT TO LOAD A SINGLE G-MEM SCATTER  ]
 ] UPDATE ACROSS AN MSB RANGE BOUNDARY WILL RESULT IN AN ERRONEOUS     ]
 ] UPDATE OF MEMORY.                                                   ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ] USER RESPONSE:                                                      ]
 ]                                                                     ]
 ] RESTRICT G-MEM CONTIGUOUS UPDATES TO ONE SECTOR. RESTRICT G-MEM     ]
 ] SCATTER UPDATES TO MSB RANGE BOUNDARIES.                            ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]CONCURRENCE:                           ]APPROVAL:                    ]
 ]LSIS:  HUGH D. STOVALL    DATE 10/10/95]                             ]
 ]     -------------------      ---------]                             ]
 ]ASD:  ERIC C. BINGHAM     DATE 10/11/95]                             ]
 ]    --------------------      ---------] DARRELL E. STAMPER 10/12/95 ]
 ]PF MGR: KAYLENE F. KINDT  DATE 10/11/95]------------------- -------- ]
 ]       ------------------     ---------] CHAIRMAN, SASCB      DATE   ]
 ]_______________________________________]_____________________________]
 @
