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MFDSP$–Master File Directory Service Package 13.2. Calling Sequence The MFDSP$ routine is called by the MASM procedure M$FDSP. M$FDSP is used to generate the calling sequence for the relocatable version, the common bank version, or the common bank version using the Auto Switch calling sequence. Section 3 describes the advantages and disadvantages of using the different types of calls. Calling Format M$FDSP[,t] pkt-length,pkt-addr,func-code,device-table-size error return normal return Parameters t Type of call to MFDSP$. This parameter is optional and may be omitted. CB or A, if specified, must be enclosed by apostrophes. pkt-length blank Call the relocatable version of MFDSP$. This is the default if t is omitted. 'CB' Call the common bank version of MFDSP$. 'A' Call the common bank version of MFDSP$ using the Auto Switch method. The length of the packet provided by the calling program to the MFDSP$ routine. In general, a packet length of 4400 words is needed by MFDSP$. If this parameter is omitted, then the routine uses the value in H1 of register A0 as the packet length. The packet length parameter can be given as an actual number, a tag that has been equated to a number, or the address of a word that contains the packet length (see 13.4.). pkt-addr The address of the packet provided by the calling program to the MFDSP$ routine. The first two words of the packet must contain the internal file name (12 Fieldata characters, left-justified and space-filled format) of the file created by using the ER MSCON$. The rest of the packet is used by the MFDSP$ routine for I/O buffers and internal I/O packets and tables. If this parameter is omitted, then the routine uses the value in H2 of register A0 as the address of the packet. 13–2 7833 1733–004
func-code MFDSP$–Master File Directory Service Package The function code may be given as an actual number, a tag that has been equated to an actual number, or the address of a word that contains the number. The first time the MFDSP$ routine is called, it must be called with a function code of zero or one. If the MFD file was created using the DGET$ function on the ER MSCON$, then use zero on the MFDSP$ call. If the MFD file was created using the DGET$P function on the ER MSCON$, then a function code of one must be used on the MFDSP$ call. If this parameter is omitted, the routine uses the value in H2 of register A1 as the function code. If device-table-size is specified as the fourth parameter then this parameter is required. The function codes for MFDSP$ are the following: 0 Initialize for DGET$ file and return the address of the first lead item. 1 Initialize for DGETP$ file and return the address of the first main item. 2 Get next lead item (DGET$ file only). 3 Get sector 1 of lead item (DGET$ file only). 4 Get next main item. 5 Get next sector of main item. 6 Get first DAD table associated with the main item returned by function 4 or 5. 7 Get next DAD table. 8 Find item whose MFD address is in A2. 9 Convert MFD address in A2 to DGET$ file relative address in A3. 10 Get a ER MSCON$ (DGET$) copy of the MFD and initialize (function code 0) device-table-size If this parameter is omitted, the default maximum size of the device number table is 1,000 words. The device table is a buffer built by MFDSP$ to contain a 1-word entry for each mass storage device configured on the system. Entries are located in the table according to the device number or LDAT index (see the Exec System Software Administration <strong>Reference</strong> <strong>Manual</strong> (subsection 2.2) for more information on the LDAT index). This means that if a device is numbered 100, its entry will occupy the 101 st word of the table (entries begin at the second word of the table). If this parameter is included, the ‘func-code’ parameter must also be included. The default maximum size of the device number table is 1,000 words. If your system includes devices numbered greater than 999, you can use this parameter to increase the table size to a maximum of 4,096 words. The requested word size of the table should be at least the highest device number plus 1. A device-table-size value of 1000 or less will use the current table size of 1,000 words. The pkt-length (parameter 1) should also be increased when a larger device table size is requested by the fourth parameter. The device table size parameter is only used by functions that initialize the device table (functions 0, 1, and 10.) The value of this parameter is passed in H1 of register A1. 7833 1733–004 13–3
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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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Page 120 and 121: CONWRD$-Condition Word Routine Para
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Page 138 and 139: GETPSF$-Get a Scratch File Routine
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Page 152 and 153: ID$-Identification Line Routine Bit
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Page 158 and 159: INFOR$-Internal Format Table Interf
Page 172 and 173: MFDSP$-Master File Directory Servic
Page 182 and 183: PREPRM, PREPRO, PREPF$, and POSTPR$
Page 196 and 197: ROR, ROR$-Relocatable Output Routin
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Page 218 and 219: SAR$ READ 17.1.1.1. Required Inform
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SAR$ READ REQUEST_TYPE PLUS Attribu
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SAR$ READ READ_ADDRESS_WORD_OFFSET
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SAR$ READ CHARACTER_CODE PLUS Attri
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SAR$ READ CONTROL_RECORD_WORD_LENGT
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SAR$ READ The default buffer and ta
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SAR$ READ 17.1.3.2. SAR_READ Proced
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SAR$ READ 17.1.3.4. Example The fol
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SAR$ READ Table 17-3. SAR$: READ Pr
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SAR$ 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 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 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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