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PREPRM, PREPRO, PREPF$, and POSTPR$ Word 13 file information Contains indicators that the routine POSTPR$ uses to restore program files to their original assignment state. S1 Source input S2 Source output S3 Relocatable output 0 No action 1 @FREE,A remove attached name (SI$, SO$, RO$) 2 @FREE,AX remove attached name and release exclusive use 3 @FREE,AR remove attached name and free file 010 File is read inhibited 020 File is tape 040 Write permission denied ITI–input termination indicator Contains the SIR$ input termination indicator for purposes of processor reusability. The possible values are 0 1 2 Reuse of the processor is possible. (Input terminated by call to CLOSR$, or @EOF image, end of @ADD,E file, INFOR CLIST image, or transparent control image.) End of file has been encountered. (Symbiont read operation returned with bit 0 set in register A0.) requested cycle @ENDX has been encountered. Contains source input element cycle requested. If none requested, the latest cycle is used. Words 16–25 Contain the symbolic output element table item. 14–6 7833 1733–004
Words 27–39 May also be used for source output, that is, with SOR. Words 29–38 Contain the relocatable element table item. 14.1.4. Reusable Processor Construction PREPRM, PREPRO, PREPF$, and POSTPR$ Initial program load operations are expensive relative to swapping. A mechanism is provided that allows a program to make itself reusable, thereby avoiding the need to reload itself. This applies to programs called by processor call statements but not by @XQT. If the processor in question makes use of the standard processor interface routines (PREPRO, PREPRM, POSTPR$, ROR, SOR, SIR$), implementing reusability is not a major task. The following describes the appropriate steps. 1. Register the processor name with INFOR CLIST (ER CLIST$), either ASCII or Fieldata. Use a type 0 list, because an unknown control statement terminates CLIST mode. See the Exec ER Programming Reference Manual. 2. Become self-initializing or self-reinitializing. This means that any data areas that are expected to contain particular values at the beginning of the program must be initialized by a particular instruction sequence. Do not rely on static data initialization. Do this by explicitly setting all initialized variables to their initial value or by reloading the main segment. The former method is recommended unless the number of variables is excessive. 3. Check for potential reusability as indicated in PARTBL by SIR$ (S4 of PARTBL+13; see Figure 14–1); then call REPRO$ or REPRM$ to read the next INFOR, if any; reinitialize or terminate depending on which return is given by REPRO$/REPRM$. This is done with the following steps: a. If S4 of PARTBL+13 > 0, call POSTPR$, then quit. b. Zero INFOR$ (see Section 12), then call REPRO$ or REPRM$, setting A0 as desired. c. If absolute-eof return, call POSTPR$, then quit. d. If wrong CLIST value, take action as defined for the particular processor in question. e. If error return, treat same as error return from PREPRO or PREPRM. f. If normal return, reinitialize the processor (and SIR$, if used, by storing 0 in SIRP2$); begin new processing operation (compilation, assembly, and so on). 7833 1733–004 14–7
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OS 2200 System Service Routines Lib
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OS 2200 System Service Routines Lib
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Contents 4.2.5. Error Status Codes
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Contents 14.1.4. Reusable Processor
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Contents Section 19. SAR$ ATREAD ..
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Contents Section 23. SIR$-Symbolic
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Contents Appendix J. Obsolete Entry
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Figures xiv 7833 1733-004
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Tables 20-1. SAR$: PLUS COM Buffer
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Introduction 1.2. Notation Conventi
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Introduction Numbers are represente
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Introduction If you install SYSLIB
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System Standard Procedures and Defi
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SYSLIB Access Methods All the SYSLI
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SYSLIB Access Methods This type of
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SYSLIB Access Methods 3-6 7833 1733
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AEDIT$-ASCII Image Composition Edit
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BSP$-Program File Basic Service Pac
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CABSAD$, CRELAD$-Addressing Routine
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CONWRD$-Condition Word Routine Para
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CONWRD$-Condition Word Routine 7-4
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EDIT$-Fieldata Image Composition Ed
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FDASC$-Fieldata/ASCII Data Conversi
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Page 138 and 139: GETPSF$-Get a Scratch File Routine
Page 144 and 145: ID$-Identification Line Routine Exe
Page 146 and 147: ID$-Identification Line Routine Bit
Page 148 and 149: ID$-Identification Line Routine Err
Page 150 and 151: ID$-Identification Line Routine 11.
Page 152 and 153: ID$-Identification Line Routine Bit
Page 154 and 155: ID$-Identification Line Routine 11.
Page 156 and 157: ID$-Identification Line Routine err
Page 158 and 159: INFOR$-Internal Format Table Interf
Page 170 and 171: MFDSP$-Master File Directory Servic
Page 182 and 183: PREPRM, PREPRO, PREPF$, and POSTPR$
Page 196 and 197: ROR, ROR$-Relocatable Output Routin
Page 204 and 205: SAR$-Symbolic Access Routines 16.1.
Page 206 and 207: SAR$-Symbolic Access Routines FILE_
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Page 212 and 213: SAR$-Symbolic Access Routines FIP$H
Page 214 and 215: SAR$-Symbolic Access Routines 16.2.
Page 216 and 217: SAR$-Symbolic Access Routines 16-14
Page 218 and 219: SAR$ READ 17.1.1.1. Required Inform
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Page 222 and 223: SAR$ READ READ_ADDRESS_WORD_OFFSET
Page 224 and 225: SAR$ READ CHARACTER_CODE PLUS Attri
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Page 228 and 229: SAR$ READ The default buffer and ta
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SAR$ READ 17.2. READ Function/MASM
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SAR$ READ SR$REQTYPE The requested
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SAR$ READ SR$CALLST The status code
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SAR$ READ SR$SDFICW The image contr
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SAR$ READ 17.2.3.1. Open-Input Proc
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SAR$ READ 17.2.3.3. Close-Input Pro
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SAR$ READ Table 17-6. SAR$: READ Pr
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SAR$ READ 17.3.3. ASCII/ISO with Em
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SAR$ WRITE The calling program must
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SAR$ WRITE 18.1.1.2. Optional Infor
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SAR$ WRITE OUTPUT_IMAGE_CHARACTER_T
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SAR$ WRITE LINE_NUMBER_INTEGER_PART
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SAR$ WRITE IMAGE_BYTE_LENGTH PLUS A
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SAR$ WRITE The default buffer and t
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SAR$ WRITE 18.1.3.2. SAR_WRITE Proc
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SAR$ WRITE S'Print_heading' Insert
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SAR$ WRITE 18.1.3.5. Example The fo
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SAR$ WRITE Table 18-3. SAR$: WRITE
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SAR$ WRITE Empty symbiont output fi
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SAR$ WRITE SW$OUTRECT The type of r
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SAR$ WRITE SW$ELTCDT For SDF elemen
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SAR$ WRITE 18.2.1.4. WRITE Packet D
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SAR$ WRITE • Optional parameters
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SAR$ WRITE Initial Condition The ca
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SAR$ WRITE Table 18-6. SAR$: WRITE
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SAR$ WRITE 18-36 7833 1733-004
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SAR$ ATREAD 19.1.1.1. Required Info
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SAR$ ATREAD Other character set typ
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SAR$ ATREAD OUTPUT_IMAGE_BYTE_LENGT
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SAR$ ATREAD 19.1.3. ATREAD Procedur
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SAR$ ATREAD • Attributes The addr
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SAR$ ATREAD Table 19-3. SAR$: ATREA
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SAR$ ATREAD SA$OTEXTB The address o
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SAR$ ATREAD 19.2.1.3. Information R
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SAR$ ATREAD 19.2.1.5. ATREAD Packet
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SAR$ ATREAD • Optional parameters
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SAR$ ATREAD S$ARATREAD does not spa
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SAR$ ATREAD Table 19-6. SAR$: ATREA
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SAR$ COM OUTPUT_TEXT_BUFFER_ADDRESS
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SAR$ COM INPUT_SELECT_LIST_ADDRESS
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SAR$ COM 20.1.1.3. Information Retu
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SAR$ COM 20.1.3. SAR$ COM Procedure
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SAR$ COM Table 20-3. SAR$: COM Proc
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SAR$ COM 20.2.1.2. Optional Informa
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SAR$ COM SC$RUNIDW1 The first four
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SAR$ COM Example $ASCII $INCLUDE
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SAR$ COM • Optional parameters (d
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SAR$ COM Table 20-5. SAR$: COM Proc
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SDFI, SDFO-System Data Format I/O R
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SFDT$-System Standard Format Date a
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SIR$-Symbolic Input/Output Routine
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Program Trace Routine • The follo
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Program Trace Routine Tracing can b
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Program Trace Routine In each of th
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Program Trace Routine In demand mod
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Program Trace Routine CAPTUR Enters
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Program Trace Routine T L B S E N D
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Program Trace Routine LINE Adjusts
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Program Trace Routine SET L N Print
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Program Trace Routine 24.5. Control
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Program Trace Routine 24-20 7833 17
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SOR-Symbolic Output Routine SOR ins
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SOR-Symbolic Output Routine 25.3. O
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SOR-Symbolic Output Routine 25.5. E
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Using SYSLIB A-2 7833 1733-004
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Diagnostic Messages x FILE NOT AVAI
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Diagnostic Messages SIR EDIT ERR c
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Diagnostic Messages B-6 7833 1733-0
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SYSLIB Restrictions C-2 7833 1733-0
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SYSLIB Elements Table D-1. SYSLIB E
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SYSLIB Elements Table D-1. SYSLIB E
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SYSLIB Elements D-6 7833 1733-004
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SYSLIB Common Bank Entry Points Tab
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SYSLIB Common Bank Entry Points Tab
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SYSLIB Common Bank Entry Points E-6
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Interface to Selected Extended Mode
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INFOR Information A field in the pr
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INFOR Information Word 0 Bits 0-9 T
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INFOR Information Bits 18-23 File C
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INFOR Information G.4. INFOR Table
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INFOR Information G-10 7833 1733-00
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ASCII-like Character Sets Table H-1
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ASCII-like Character Sets H-4 7833
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Extended Mode Interface to SYSLIB I
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Extended Mode Interface to SYSLIB T
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Extended Mode Interface to SYSLIB b
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Extended Mode Interface to SYSLIB P
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Obsolete Entry Points, PROCs, and R
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Related Product Information OS 1100
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Glossary Exec The kernel of the OS
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Glossary Problem list entry (PLE) A
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Index Fieldata characters, 8-1 floa
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Index read call, 21-8 SDFO close ca
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