IBM 5280 Distributed Data System - Index of

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Logical I/O T abh~The logical flO table is located at relative displacement hex 40 through hex 7F ofeach partition. Each data set lOB is represented with a 4-byte entry in the logicalI/O table. The table entries are stored within the table in the order of the data setnumbers.The logical I/O table entries have two formats: one format is used for the keyboard/display lOB and the other format is used for diskette lOBs and printer lOBs.The following is a general description of the logical I/O table. Following the generald6SCiiptioii is a complete d6SCiiption of the tv·vo formats that ai6 uSed fOi the logicalI/O table entries. The address of each table entry is the data set number times 4 plushex 40.Keyboard/Display FormatByteMeaningo Not used (initialized to hexadecimal 00).Flags:Bitrs)o 1MeaningSpecial processing is required. This bit is set on whenan external status condition is detected during aRESUME, CANCEL, or ENTR operation and indicatesthat external status processing is required after theseoperations have completed.An ENTR command is pending.2-3 Not used, set to zero.4 A keyboard/display operation is pending.5-7 Not used, set to zero.2-3 Address of the keyboard/display lOB (always 0080).56
Diskette and Printer FormatByteoMeaninglOB pointer address.I/O Class:Bitrs)Meaning0-1 I/O type:01 = Output only10 = Input only11 = Input and output2 1 The main microprocessor is waiting to remove an lOBfrom an lOB chain.3 The main microprocessor is waiting to add an lOB to anlOB chain.4 The main microprocessor is waiting to lo
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ContentsCHAPTER 1.5280 FUNCTIONS AN
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Binary Double Register Add Immediat
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Chapter 1. 5280 Functions and Stora
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MAIN STORAGEMain storage is divided
Page 11 and 12: COMMON AREAThe following is a gener
Page 13 and 14: Device lOB PointersEach device lOB
Page 15 and 16: Resource Allocation TableThe option
Page 17 and 18: The first 256 bytes of this area, i
Page 19 and 20: When a program executing in a backg
Page 21 and 22: User Defined Error RecoveryWhen a p
Page 23 and 24: 3. Determines the proper attention
Page 25 and 26: If the compare of options does not
Page 27 and 28: Magnetic Stripe ReaderThe optional
Page 29 and 30: COMMUN ICATIONS CONTROLThe communic
Page 31 and 32: The main microprocessor checks the
Page 33 and 34: Chapter 2. Main Storage Data AreasT
Page 35 and 36: Hex Length inDisplace- Bytes {inmen
Page 37 and 38: Hex Length inDisplace- Bytes (inmen
Page 41 and 42: COMMON FUNCTIONS AND GLOBAL TABLEST
Page 43 and 44: Error Recording TablesA system hard
Page 45 and 46: Error Code Format,.xxx xe Device Id
Page 47 and 48: e For error codes 1200 and 1201, by
Page 49 and 50: • Storage overrun: The diskette M
Page 51 and 52: • Outstanding Status from Printer
Page 53 and 54: The format of the partition header
Page 55 and 56: PARTITION AREAThe partition area co
Page 59 and 60: HexDisplacementLength inBytes (inHe
Page 61: HexDisplacementLength inBytes (inHe
Page 65 and 66: 70 Positions Remaining in Current R
Page 73 and 74: HexDisplacement39Length inBytes (in
Page 75 and 76: HexDisplacement3C3DLength inBytes (
Page 81 and 82: System Indicaton Within a Partition
Page 84 and 85: Diskette lOBFollowing is a general
Page 86 and 87: HexDisplacementLength inBytes (inDe
Page 88 and 89: HexDisplacementlength inBytes (inHe
Page 94 and 95: 58 System Use Only I Number of Byte
Page 100 and 101: HexDisplacement63Length inBytes (in
Page 102 and 103: An object code table instruction co
Page 104 and 105: The following illustration shows ho
Page 106 and 107: The following illustration shows ho
Page 108 and 109: Control Byte GroupContiol (such as
Page 110 and 111: 010 Start of Control String: Contro
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101 Execute Secondary Format: The e
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Field Attributes and Storage Duplic
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Constant Insert Data and PromptsCon
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-------Byte Groups: Repeated for ea
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Edit FlagsThe edit flags specify th
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Second Optional Edit Control ByteTh
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Hex Code05MeaningInsert comma chara
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120This page intentionally left bla
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Ell---------r---00 20 40 60 80 AD C
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The validity table contains 1-byte
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DIACRITIC TABLETho "''''' "" rli",,
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The second and third byte contain t
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SCAN CODE TRANSLATE TABLETI-t._ ,..
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Addressing a Byte Within the Partit
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Addressing a Binary RegisterEach bi
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.4rlrlr,.ccinn thrnllnh ::. ~vct,."
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INSTRUCTION FORMATMnemonic to Op Co
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OpOpMnemonic Code Mnemonic CodeTROF
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Test Format Number (I F fmt)Source:
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Test and Reset Indicator (lFIR In)S
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Decrement Binary Register and Test
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Subroutine CaU (CALL/CALL TB)CALL B
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Subroutine Return or Enable Externa
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Test Decimal Register for Absolute
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Test Decimal Register for Signed Nu
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Deci",@1 Register Subtract (-)Soure
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Decimal Register Copy (=)Source: Ra
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Decimal Register Diyide U}Source: R
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Decimal Registers, Move Partial Con
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Decimal Register lone Modification
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Decimal Register Shift Left Signed
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Decimal Registei Shift Right and Ro
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Formatted Read to Storage (REBF)Sou
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Close a Data Set or Terminate Commu
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Search a Data Set (SEARCH)Source:SE
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ByteContents3-4 Fie!d position in w
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Position Diskette (POSN)[BOE] CURRS
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Search Resource Allocation Table (S
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Load a Partition (LOAD)Source:LOADO
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Exit a Partition (EXIT)Source:IIEXI
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Insert a Record into a Data Set (WR
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Source: INIT (dsn ,BRn)Object:8DIII
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ByteMeaningend The last byte in the
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Wait for 110 Completion (WAIT/lWAIT
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Formatted Write from Registers (WRB
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Diagnostic operations are used for
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Formatted Write to the Screen (WFMC
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The TeTL instructioll perforrns the
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Skip on AND, Exclusive-OR Mask (AND
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Exchange Binary Register Contents
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Convert Binary to EBCDIC (BINHEX)So
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Skip If Not Equal (I FC NOT)Source:
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Search Ordered Table for Higher or
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Read Table Entry (T8RO/TBRL)Source:
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Search Reverse Ordered Table for Lo
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Insert Table Entry (TBIN)Source: TB
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Compare Decimal for Not Equal (I F
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ea.n,.are Det:imal for Equal (I F R
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Compare Decima' Digit5 for Not Equa
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Compare Decimal Digits for Equal (I
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Compare Binary Ha!f-Register for No
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C.ompare Binary Half-Register for E
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Compare Binary for Not Equal OF BRn
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Compare Binary for Equal (I F BRn E
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Load Decimal Register from Base-Dis
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Store Decimal Register into Labeled
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Binary Subtract Immediate Data (BRn
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Binary Double Register Subtract Imm
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Binary AND with Immediate Data (BRn
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Binary Exclusive OR with Immediate
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Store Binary Register Contents (lab
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Move Characters (MVC(BRn) I MVC(BRn
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Convert Binary to Decima! (Rn = BRn
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Translate and Test (TRT)Source:Obje
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Binary Divide. Single or Double Reg
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Compare Character Strings (CLC)iSou
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Set Bits On 'v· .. ith Mask (SETON
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Set Bits Off with Mask (SETOFF)Sour
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Skip if Bits are OFF (lFB OFF)Sourc
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Skip If Bits are On (I FB ON)Source
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Insert Constant Into a Base Displac
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Skip if Byte Equals Constant (I FB
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Duplicate a Character at Base Displ
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Replace Field on Screen (REPFLD)Sou
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Read Elapsed Time CounterSource: RT
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Change Row Attribute (KEYOP)Source:
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Accept Keystrokes and Store (KACCPT
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Pass EBCDIC to Keyboard (KEYOP)Sour
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Request Keyboard Error Mode (KERRST
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Sound Buzzer (BUZZ)Source:BuzzII I
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Click Keyboard (CLICK)Source:CLICKO
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The magnetic stripe data consists o
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This operation should be issued onl
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Keyboard/Disp!ay Externa! Register
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Load KeyboardlDisplay Control Area
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Move Characters to Screen (CRTMM)o
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Resume Data Entry (RESUME/RESMXT/RE
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Enter (ENTR)Source:Object:D Op code
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How to Start the Display IAlter Fun
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The following chart shows the optio
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Display Main StorageThe display mai
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Move Keyboard/Display StorageThis f
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DUMP AND TRACE CONSOLE FUNCTIONSWit
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Trace FunctionThe trace function tr
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Main Storage Disp!ayYou can request
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Byte Bit Meaning if 13 Autu-dup/ski
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In verify mode, for all fields exce
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No character set checking is perfor
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!f the I+- (Field Backspace) key is
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• Di~its Only Ri~ht-Adjust or Num
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• Numeric Field: For a numeric fi
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Katakana Uppershiftkey (SYM SH I FT
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Skip FunctionThe skip function is i
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EBCDIC CHARTS FOR PRINTABLE CHARACT
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• BellFunction: This control char
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The following table shows the chara
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Notes:1. The following table shows
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BitEBCDIC Number Key DescriptionX'O
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•Functions from 2D-3F are handled
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The 69-Key Data Entry Keyboard and
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DecimalPosition73747576DescriptionE
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D!SKETTE HEADER LABEL (HDR1)Diskett
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Decima!Position45DescriptionMultivo
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auto dup: Automatic duplication. (1
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data table: A table defined by the
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input record: A data record that is
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program listing: A computer printou
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verify mode: The mode in which the
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lock lengthdiskette JOB 82printer l
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EBCDIC charts for printable charact
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load parameters 182lock shared tabl
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shift instructionsbinary register 2
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380
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GA21-9353-0Fold and tapePlease do n
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