TOPS-20 User's Guide
Appendix B Standard file types
Table B-1 lists the file types that have a specific meaning to the system or to certain programs. When you create a file for use with a particular program, you should assign the correct file type. If you do, the system has more information about the file and can attempt to perform the correct function after you type a minimum set of commands or switches. Normally, no penalty arises from assigning an undefined file type, but if you assign an incorrect file type, the system may incorrectly interpret the file, especially when you use the LOAD-class commands.
Table B-1: Standard File Types ______________________________________________________________________ File Type Kind of File Meaning ______________________________________________________________________ 68C Source Source file in the COBOL-68 language 74C Source Source file in the COBOL-74 language A10 ASCII ASCII version of a DECSYSTEM-20 program loaded by the PDP-11 A11 ASCII ASCII version of a PDP-11 program loaded by the PDP-11 ABS Object Absolute (nonrelocatable) program AID Source Source file in AID language ALG Source Source file in ALGOL language ALP ASCII Printer forms alignment ATO ASCII PTYCON automatic command file ATR Binary Attribute file in SIMULA language AWT Binary Data for automatic wire tester BAK Source Backup file from TECO B10 Source Source file in the BLISS-10 language B20 Source Source file in the BASIC-PLUS-2/20 language B36 Source Source file in the BLISS-36 language BAS Source Source file in BASIC language BCM ASCII Listing file created by FILCOM (binary compare) BCP Source Source file in BCPL language BFR ASCII Copy of VTECO buffer BIN Binary Binary file BIX ASCII Output of the DSR program for input to the TCX program BLB ASCII Blurb file BLI Source Source file in BLISS-10 language BOX ASCII Output of BOX program - picture for use in specifications and manuals BTC ASCII Output of the DSR program for input to the TOC program BUG Object Saved to show a program error BWR ASCII Beware file listing warnings about a file or program C68 Source Source file in the COBOL-68 language C74 Source Source file in the COBOL-74 language CAL Object CAL data and program files CBL Source Source file in COBOL-68 or COBOL-74 language CCL ASCII Command file for LINK CDP ASCII, Binary Spooled output for card punch CED ASCII Input to COPYED CFL ASCII RUNFIL command file CKP Binary Checkpoint core image file created by COBOL operating system CHN Object CHAIN file CMD ASCII Command file COB ASCII COBOL Source File COR ASCII Correction file for SOUP CPY Binary Copy of a crash written by SETSPD CRF ASCII CREF (cross-reference) input file CTL ASCII Batch control file DAT ASCII, Binary Data (FORTRAN) file, output file with ANSI carriage control DCT ASCII Dictionary of words DIR ASCII Directory from DIRECTORY command DMP ASCII COBOL compiler dump file DOC ASCII Listing of modifications to the most recent version of the software DRW Binary Drawing for VB10C drawing system ERR ASCII Error message file EXE Object Executable program FAI Source Source file in FAIL language FCL Source Source file in FOCAL language FLO ASCII English language flowchart FOR Source Source file in FORTRAN language FRM ASCII Blank form for handwritten records FTP Source FORTRAN test programs GND ASCII List of ground pins for automatic wirewrap HGH Object Nonsharable high segment of a TOPS-10 two-segment program HLP ASCII Help text files IDA ASCII, Binary COBOL ISAM data file IDX ASCII,SIXBIT Index file of a COBOL ISAM file INI ASCII, Binary Initialization file L36 Object LIBRARY object file for the BLISS-36 language LAP ASCII Output from the LISP compiler LIB ASCII COBOL source library LOG ASCII Batch, PTYCON or LINK log file LOW Object Low segment of a TOPS-10 two-segment program LPT ASCII Spooled output for line printer LSP Source Source file in LISP language LST ASCII Listing data created by assemblers and compilers MAC Source Source file in MACRO language MAN ASCII Manual (documentation) file MAP ASCII LINK map file MEM ASCII Formatted text file produced by the DSR program MID Source Source file in MIDAS (MIT Assembler) language MIM Binary Snapshot of MIMIC simulator MSB Object MUSIC compiler binary output MUS Source MUSIC compiler input N Source Source file in NELIAC language NEW All New version of a program or file OBJ Object PDP-11 relocatable binary file OLD Source, Object Backup source program OPR ASCII Installation and assembly instructions OVR Object COBOL overlay file P11 Source Source program in MACX11 language PAL Source Source file in PAL 10 (PDP-8 assembler) PAS Source Source file in the PASCAL language PCO ASCII Program change order PL1 Source Source file in PL1 language PLM ASCII Program logic manual PLO Binary Compressed plot output PLT ASCII Spooled output for plotter PPL Source Source file in PPL language PTP ASCII, Binary Spooled output for paper-tape punch Qxx ASCII Edit backup file R36 Source LIBARY source file for the BLISS-36 language RAM ASCII DECSYSTEM-20 microcode REL Object Relocatable binary file REQ Source LIBARY source file for the BLISS-36 language RIM Object RIM loader file RNO ASCII Programming specifications in DSR input RSP ASCII SCRIPT response time log file RSX All Files for RSX-11 RUN ASCII Command file for SYSJOB SAI Source Source file in SAIL language SAV Object Low segment from a one-segment TOPS-10 program SCD ASCII Differences in directory SCM ASCII Listing file created by FILCOM (source compare) SCP ASCII SCRIPT control file SEQ ASCII, SIXBIT Sequential COBOL data file, input to ISAM program SHR Object A TOPS-10 sharable program SIM ASCII Source file in SIMULA language SMP Source Source file in SIMPLE language SNO Source Source file in SNOBOL language SPC ASCII Corrected file for SPELL program SPD ASCII Dictionary for SPELL program SPM ASCII File of mispelled words for SPELL program SPT ASCII SPRINT - created files SPU ASCII File of uppercase words for SPELL program SPX ASCII File of exception (error) lines for SPELL program SRC ASCII Source files STB Symbol table file STD ASCII Standards SYM Binary LINK symbol file SYS Binary Special system files TEC ASCII TECO macro TEM ASCII, Binary Temporary files TMP ASCII, Binary Temporary files TPB ASCII Typeset input for producing a .BLB file TPC ASCII Typeset input for producing a .CCO file TPD ASCII Typeset input for producing a .DOC file TPE ASCII Typeset input for producing error message text TPH ASCII Typeset input for producing a .HLP file TPL ASCII Typeset input for producing a logic manual TPM ASCII Typeset input for producing a .MAN file TPO ASCII Typeset input for producing a programming specification TPP ASCII Typeset input for producing an .OPR file TSK Object An RSX-11 task image TST All Test data TV ASCII Command file for TV TXT ASCII Text file UPD ASCII Updates flagged in margin (FILCOM) WCH ASCII SCRIPT monitor (WATCH) file WRL ASCII Wirelist XOR Binary Module data for XOR tester XPN Object Expanded save file (FILEX and LINK) Zxx ASCII EDIT original file (all xx) _______________________________________________________________________