Program Logic Manual - All about the IBM 1130 Computing System

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ID WordThe layout of the Symbol Table ID word is given inTable 4. The ID word is formed when the entry isplaced in the Symbol Table.Table 4. The Contents of the FORTRAN Symbol Table ID WordBitPosition0 1 - Constant0 - VariableStatus and Meaning1 1 - Integer0 - Real2 1 - COMMONName-Data WordsThe Name-Data words of Symbol Table entries havethe following format:3-4 01 - One dimension10 - Two dimensions11 - Three dimensions5 1 - Statement function parameter/dummy argument6 1 - Statement number7 1 - Statement function nameWord BitContents8 1 - Subprogram name9 1 - FORMAT statement number1 0 0, if the following 15 bits containthe first half of a constant; 1, ifthe following 15 bits contain anythingother than the first half of aconstant.1-15 First 15 bits of the 30-bit SymbolTable entry2 0 Same as bit 0 of word 11-15 Second 15 bits of the 30-bit SymbolTable entry10 1 - Referenced statement number or definedvariable11 1 - External12 1 - Generated temporary storage location (GT)13 1 - Subscript-generated temporary variable (SGT)14 1 - Allocated variable15 Not UsedThree words are always used for the dimensioninformation regardless of the number of dimensions.For one-dimensional arrays, all three dimensionwords contain the integer constant that specifies thedimension of the array. For example, the entry forarray ARRAY (10) would appear as:Dimension Information Array Name10 I 10 I 10 ID WorcDimensioned EntriesLowest- Highest-AddressedAddressedWordWordThe Symbol Table entry for a dimensioned variablerequires six words: two for the array name, onefor the ID word, and three for the dimension information.The dimension information occupies thethree lowest-addressed words, the ID word occupiesthe next higher-addressed word, and the Name-Datawords occupy the two highest-addressed words.For two-dimensional arrays, the first (highestaddressed)dimension word contains the integerconstant of the first dimension; the middle andlast (lowest-addressed) dimension words bothcontain the product of the first and second dimensioninteger constants. Thus, the dimension informationfor array B(5,15) appears as:Section 11. FORTRAN Compiler 79
Dimension Information Array Name75 I 75 1 5 ID WordFor three-dimensional arrays, the first dimensionword contains the integer constant of the firstarray dimension; the middle dimension word containsthe, product of the first and second dimensioninteger constants; the third dimension word containsthe product of the first, second, and thirdinteger constants of the array dimensions. The dimensioninformation for array C(9,9,9) appears as:Dimension Information Array Name729 81 9 ID Word .the number of words used to store that statement,including the ID word and statement terminator.The statement type codes, shown in Table 5, areadded in the Classifier Phase (except for FORMATstatements).Table S. FORTRAN Statement ID Word Type CodesCodeStatement Types00000 Arithmetic00001 BACKSPACE00010 END00011 END FILE00100 SUBROUTINE00101 REWIND00110 CALL00111 COMMONSTATEMENT STRINGThe source statements are read by the Input Phase,converted to EBCDIC, and stored in core storage.The first statement is stored starting at $ZEND, andeach succeeding statement is placed adjacent to theprevious statement, thus forming the source statementsinto a string. The area within which thesource statements are stored is referred to as theString Area.01000 DIMENSION01001 REAL01010 INTEGER01011 DO01100 FORMAT01101 FUNCTION01110 GO TO01111 IF10000 RETURN10001 WRITEID WordFor identification purposes, as each statement isplaced in the String Area, an ID word is added atthe low-address end of each statement. The IDword has the following format:Bit Contents0-4 Statement type code5-13 Statement Norm14 Varied; used for interphasecommunication15 1, if statement is numbered; otherwise, 0The Norm is the only portion of the ID word completedby the Input Phase. The Norm is a count of10010 READ10011 PAUSE10100 Error10101 EQUIVALENCE10110 CONTINUE10111 STOP11000 DO test11001 EXTERNAL11010 Statement Function11011 Internal Output Format11100 CALL LINK, CALL EXIT11101 FIND11110 DEFINE FILE11111 DATA80
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File Number 1130-36Form Y-26-3714-2
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CONTENTSSECTION 1. INTRODUCTION 1 S
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IntroductionProgram Analysis Proced
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SUP05„ Supervisor, XEQ Processing
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to be fetched as a result.Phase 2 o
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Table 1. The Contents of COMMALABEL
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"Table 1 . The Contents of COMMA (C
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Table 2. The Contents of DCOM (Conc
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Likewise, information acquired by P
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1Subphase 2Subphase 2 contains the
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prior to performing any disk operat
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Cold StartLoaderResidentImageParame
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Page Blank In Original
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lank (the mainline is in Working St
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Page 38 and 39: 0 0 0 0COMMA, COMMA, COMMA, COMMA,S
Page 41 and 42: SECTION 8. CORE LOAD BUILDERFLOWCHA
Page 43 and 44: core load is executed) below locati
Page 45 and 46: LOCALs AND SOCALsIf during the firs
Page 47 and 48: LOWCORE./‘. BSC L I FL210 I BSS 1
Page 49 and 50: SubroutineMC000RL000FunctionMaster
Page 51 and 52: PHASE 6Phase 6 performs several mis
Page 53 and 54: DUP CONTROL RECORDSIn the table bel
Page 55 and 56: LocationPIHDRSIHDRPTHDRCIHDRPhase N
Page 57 and 58: specified on the DUP control record
Page 59 and 60: the disk area reserved for DUP phas
Page 61 and 62: DCTL SubroutinesThese subroutines m
Page 63 and 64: SNOFF SubroutineFixed Area is the b
Page 65 and 66: XW000This subroutine places the dat
Page 67 and 68: IITo delete the FORTRAN Compiler, t
Page 69 and 70: If // or * is found in column 1, th
Page 71 and 72: PRECIThis phase is read into core s
Page 73 and 74: Subroutine in execution Contents of
Page 75 and 76: phase. When the overlay phase compl
Page 77 and 78: PHASE 2Phase 2 handles the processi
Page 79 and 80: SCANThe SCAN subroutine collects th
Page 81 and 82: Figure 14, panel 3 shows the layout
Page 83 and 84: PhaseNumber Phase NameFunctionPhase
Page 85 and 86: 0 0 0 0 0 0 0 0COMMA,SkeletonSuperv
Page 87: If at any time during the compilati
Page 91 and 92: calls the System Core Dump program
Page 93 and 94: Pass 1 of phase 4 examines all COMM
Page 95 and 96: phase 16, when an arithmetic operat
Page 97 and 98: Phase 11 then calculates the subscr
Page 99 and 100: A DO Table entry is made for each D
Page 101 and 102: associated string and performs the
Page 103 and 104: All calls to these subprograms are
Page 105 and 106: Errors DetectedThere are no errors
Page 108 and 109: SECTION 12. SYSTEM LIBRARYFLOWCHART
Page 110 and 111: Function Name(s) Type Subtype Refer
Page 116 and 117: If (1) cylinder zero is defective,
Page 118 and 119: 1130 Disk Data File Conversion Prog
Page 120 and 121: into a 31 word work area which has
Page 122 and 123: Acknowledge and Receive. If the ope
Page 124 and 125: Write Response (Transmit). If the t
Page 126 and 127: ead response routine to handle the
Page 128 and 129: Normal EBCDIC text. This interrupt
Page 130 and 131: Notes. FIRST is set non-zero during
Page 132 and 133: Notes. During call processing SYN5
Page 134 and 135: switches and storage locations requ
Page 136 and 137: Settings.Negative = EOTZero = Block
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SECTION 14. STAND-ALONE UTILITIESDI
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PROGRAM ANALYSIS PROCEDURESINTRODUC
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SUBROUTINE ERROR NUMBER/ERROR STOPL
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•Table 8. Error Number List (Cont
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COMMA,SkeletonSupervisorCOMMA,Skele
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Assumes CoreLocation Procedureshave
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StepProcedureContinue nowhaving the
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SUBROUTINE DATA CHARTSSYSTEM DEVICE
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Register status:MainlineSaved at/re
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Significant variables:Symbolic loca
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TYPE ZFlowchart: F1012Used by: SFIO
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PRNZFlowchart: FI010Used by: SFIOSu
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Register status:MainlineSaved at/re
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READ1Used by: Assembler Language pr
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Register status:ACC EXT XR1 XR2 XR3
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Register status:ACC EXT XR1 XR2 XR3
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DISK1Used by: Monitor system progra
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Postoperative conditions and entry
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Significant variables: (Continued)S
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mom texauao ularAS • TO •LkS 2.
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MAINS• ENTER FROM• PHASE 1•SE
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•.4ISLA11.41.0..005•• • •
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••••10•ENTER FROM COLD.
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****A1**********ENTER FROM CORE** I
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J P300****A1**********ENTRY FROM Su
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****AI*ENTER HF.E F.OM♦* PHASE 3
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***** *Sim*000* 5 * * 008*%al* * A2
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.•.•••▪NNA L FRM CORE.•
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• A4 :...CM000CM11;... A4114**Al
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SOZ sixelpAAINAnoTvezifemul gaaprin
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•003•• Al•• ••iSTOREA
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..*006 *.Al.•006•. A2• •
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• D Al•••DUMPLET*A/• EXEC
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DEFINE0 *****1000* ******0*****ENTE
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•014.• Al.• •PRECI*rnA•EN
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A l•ENTER FROM MCRA•B145TAIVral
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• ENTER FROM •• PHASE 1 •
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•RHAN4 ;FLIPPER•• •x81•
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.-706 FROM •• PHASE 3 ••
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• ENTER FROM •• PHASE 9 •
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.1/1E11/2 *PHA S 7 FLIPPER:BI•RES
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•• ENTER FROM •• PHASE 9
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LDLBL Al• CONVERT LABEL •• TO
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DTHORAlCOMPUTE OSFBLOCK MORDCOUNT%I
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INT2AlFETCH DISKBUFFERADDRESSESBI
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EM0001•FETCH •APPROPRIATE •ER
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AlSAV5014yEAREAX81 82•"• INITIA
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• •• A4 •• •XF0000 F150
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STARTST1CKRLAl•"INITIALIZE PASSON
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•OOP•%AI*•NXTPOAlINIUNZE•
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•008.• AI.• •BEGIN1A• •
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Esz SDIETT0AA0T3L asvtid (aaudutop
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• A3 ••• • •STARTAlINIT
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STARTAl••• INITIALIZE TO •*
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XSTARTAlA4•• I NIT I ALIZESUBSC
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ENEAlINITIALIZE PHASE • ••STA
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6T as'otici ‘aaudurop NV/U.1103
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ENTAl• MOVE STRINGNEXT TO SYRT8L.
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••ENT 12012Al A2 ..• ••IN
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ENTAlINITIALIZEPHASE• B/ •.X.
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RC000A2:REVAIHLPHISE•B2• LOAD S
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FSLEN•Al:FSICUEStitiCeDD•SYSTEM
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DISCAl•CALIO •• ••READ ID
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IDENTAl•CALPR 007A1•.----------
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swIrommaAc103 tAreaqn tuaiskS • 8
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EEZ sUrqamoil.LaIsa (Areaqm uia4sA5
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ICNVT****A1*** ***** *ENTER I - * C
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INSRT .4. .4.Al *. 44 *. *****As **
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INT2 ..*A1***** *******• SENSE &
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SCAT3 s****A1************SAVE RUGS.
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%.• • * • **▪ 208* *0013*AL
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SEAL...•.A1ENTRYARK)•• ENTRY
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•003*• A/o• •.0*.*•003•
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..Al....A; .... ao•• COLUMN •
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RAPT!..•.AI+ENTRY VIA LIEF• PAP
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• A2 •12300 X 12100 72400••
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PACES PNCHZ P2080••••Al ...
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HOLE/'ENTRY VIA LEAF •HOLEZ•
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**•**anon*41** *****•*.4 4 * 4.
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**AI******** BRANCH TO** INTERRuPT
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8Z '90£LT,Old `Ireami tualsAs TtOL
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0X.*.2*•A5 *.•.* LAST 5.REMOVE
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APPENDIX A. EXAMPLES OF FORTRAN OBJ
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Object CodingSource Coding Object C
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Source CodingObject CodingObject Co
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Source CodingObject CodingObject Co
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Source CodingObject CodingNon-Disk
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Source CodingObject CodingWRITE (2'
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APPENDIX B. LISTINGSThis appendix c
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ADOR REL OBJECT ST.NO. LABEL OPCD F
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ADDR RFL OBJECT ST.NO. LABEL OPCD F
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ADOR REL OBJECT ST.NO. LABEL OPCD F
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ADDR REL OBJECT ST.NO. LABEL OPCD F
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AMA REL OBJECT ST.NO. LABEL OPCD FT
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SYMROL VALUE REL DEFN REFERENCESSSC
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APPENDIX C. ABBREVIATIONSBelow is a
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Abbreviation Meaning Abbreviation M
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Abbreviation Meaning Abbreviation M
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Disk Monitor Microfiche Disk Monito
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Disk Monitor Microfiche Disk Monito
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cters respectively.CSP D1 FORMAT:CS
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APPENDIX G: FIELD TYPE COMPRESSIONS
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Disk I/O subroutineResident monitor
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Arithmetic and function subroutines
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READER'S COMMENT FORMIBM 1130 Disk
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