Program Logic Manual - All about the IBM 1130 Computing System

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DISKNUsed by: Monitor system programs, Assembler Language programsSubroutines required: ILS02Linkage:* for monitor system programsLIST DCDCLDD LISTBSI L D0000FUNCTION CODEI/0 AREA ADDRESSfor Assembler Language programsLIBF DISKN (BSI 3 TV DISP)DC ARG1DC ARG2DC ARG3DC ARG4*This subroutine may be entered by user-written Assembler Language programs via the LIBF TV or by monitorsystem programs via a direct branch. If a direct branch is used, DISKN uses the parameters contained inthe ACC and EXT to construct the parameters of a LIBF and simulates a LIBF entry by calling on itself.Preoperative input paramaters (for LIBF entry)tFunction ARG1 ARG2 ARG3 ARG4 I/O Area AddressTest /0000 Not used Return to thisword if busyReturn to thisword if not busyNot usedRead /1000 Address of the Address of user Return to this Word 1 = wordI/O Area error routine word after initiatingoperation Word 2 = drivecountcode and sectoraddressWrite W/O /2000 Address of the Address of user Return to this Word 1 = wordRBC I/O Area error routine word after initiatingoperation Word 2 = drivecountcode and sectoraddressWrite With /4000 Address of the Address of user Return to this Word 1 = wordRBC I/O Area error routine word after initiatingoperation Word 2 = drivecountcode and sectoraddressWrite /1000 Address of the Address of user Return to this Word 1 = not usedImmediate I/O Area error routine word after initiatingoperationWord 2 = drivecode and sectoraddressSeek /500x Address of the Address of user Return to this Word 1 = net usedx = seek optiondisplacementI/O Area error routine word after initiatingoperationWord 2 = drivecode and sectoraddress(Applies to simulated LIBF.180
Postoperative conditions and entry points:Function at DN9 84+XR 1Symbolicentry pointReturnaddress atInterruptentry pointReturnaddress atInterruptlevelTest /0000 DN000 (branch) DN120 DNO20 DNO20 2DNO20+2 (LIBF)Read /0001 DN000 (branch) DN120 DNO20 DNO20 2DNO20+2 (LIBF)Write W/O /0002 DN000 (branch) DN120 DNO20 DNO20 2RBCDNO20+2 (LIBF)Write With /0003 DN000 (branch) DN120 DNO20 DNO20 2RBCDNO20+2 (LIBF)Write /0004 DN000 (branch) DN120 DNO20 DNO20 2ImmediateDNO20+2 (LIBF)Seek W/O /0005 DN000 (branch) DN120 DNO20 DNO20 2Seek OptionDNO20+2 (LIBF)Seek With /0005 DN000 (branch) DN120 DNO20 DNO20 2Seek OptionDNO20+2 (LIEF)Register status:ACC EXT XR1 XR2 XR3 StatusMainlineSaved at/restored fromsymbolic locationDN902 DN902+1 DN110+1 DN110+3 DN100Used X X X X XSignificant variables:Symbolic locationDN230+1Contents/UseIf DISKN was entered by a monitor system program at DN000, this word is used byDISKN to simulate a LIBF link word. The contents of this word should referencethe simulated LIBF at DN902.DNO20+4 Contents of the LIBF link word if called by a user-written LIBF.DN902 and Simulated LIBF parameters for direct branch input:DN902+1 D0010 = /1100 for read input= /2200 for write inputD0010+1 = address I/O areaDISKN is capable of executing 5 drives simultaneously. Reference to the proper disk drive work areasis accomplished by use of a table. XR1 is used to point to the relative starting position for each specificdrive in the table. The starting address in the table is computed as follows:Program Analysis Procedures 181
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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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0 0 0 0COMMA, COMMA, COMMA, COMMA,S
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SECTION 8. CORE LOAD BUILDERFLOWCHA
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core load is executed) below locati
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LOCALs AND SOCALsIf during the firs
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LOWCORE./‘. BSC L I FL210 I BSS 1
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SubroutineMC000RL000FunctionMaster
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PHASE 6Phase 6 performs several mis
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DUP CONTROL RECORDSIn the table bel
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LocationPIHDRSIHDRPTHDRCIHDRPhase N
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specified on the DUP control record
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the disk area reserved for DUP phas
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DCTL SubroutinesThese subroutines m
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SNOFF SubroutineFixed Area is the b
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XW000This subroutine places the dat
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IITo delete the FORTRAN Compiler, t
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If // or * is found in column 1, th
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PRECIThis phase is read into core s
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Subroutine in execution Contents of
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phase. When the overlay phase compl
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PHASE 2Phase 2 handles the processi
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SCANThe SCAN subroutine collects th
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Figure 14, panel 3 shows the layout
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PhaseNumber Phase NameFunctionPhase
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0 0 0 0 0 0 0 0COMMA,SkeletonSuperv
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If at any time during the compilati
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Dimension Information Array Name75
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calls the System Core Dump program
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Pass 1 of phase 4 examines all COMM
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phase 16, when an arithmetic operat
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Phase 11 then calculates the subscr
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A DO Table entry is made for each D
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associated string and performs the
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All calls to these subprograms are
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Errors DetectedThere are no errors
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SECTION 12. SYSTEM LIBRARYFLOWCHART
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Function Name(s) Type Subtype Refer
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If (1) cylinder zero is defective,
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1130 Disk Data File Conversion Prog
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into a 31 word work area which has
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Acknowledge and Receive. If the ope
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Write Response (Transmit). If the t
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ead response routine to handle the
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Normal EBCDIC text. This interrupt
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Notes. FIRST is set non-zero during
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Notes. During call processing SYN5
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switches and storage locations requ
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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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Page 175 and 176: PRNZFlowchart: FI010Used by: SFIOSu
Page 183 and 184: Register status:MainlineSaved at/re
Page 185 and 186: READ1Used by: Assembler Language pr
Page 193 and 194: Register status:ACC EXT XR1 XR2 XR3
Page 203 and 204: Register status:ACC EXT XR1 XR2 XR3
Page 205 and 206: DISK1Used by: Monitor system progra
Page 207: Significant variables:Symbolic loca
Page 211: Significant variables: (Continued)S
Page 214 and 215: mom texauao ularAS • TO •LkS 2.
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Page 220 and 221: ••••10•ENTER FROM COLD.
Page 222 and 223: ****A1**********ENTER FROM CORE** I
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Page 232 and 233: • A4 :...CM000CM11;... A4114**Al
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Page 242 and 243: E T z siautromoiacuninact umi2oad A
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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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SSZ sprIpmoid6 asviTcl gaalPlum0 NV
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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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*****. YES *010.Er000 .FC015 * 02**
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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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XMTNTAt .. *.4:00* ******** .1,1. *
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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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Z'90£ •OHDNdBacirl tualsAS 'S TO
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as*** **•• *555 *****0065 *006*
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**•**anon*41** *****•*.4 4 * 4.
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**AI******** BRANCH TO** INTERRuPT
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ST .90E•OCILIVD 'Axemui tualsAs '
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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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