The Programmer's Guide to TRSDOS Version 6 - Tim Mann's Home ...

@WRSEC SVC-53 Write a disk sector
@WRSSC SVC-54 Write a disk directory sector
@WRTRK SVC-55 Write a disk track (format data)
7.5.5 File Access
Name Svc # Purpose
@GET SVC-03 Character input from a device/file
@PUT SVC-04 Send a character to a device/file
@BKSP SVC-61 File record backspace
@CKEOF SVC-62 Check for file's end-of-file (EOF)
@LOC SVC-63 Return file's current record number
@LOF SVC-64 Return file's ending record number
@PEOF SVC-65 Position to the end of a file
@POSN SVC-66 Position to a designated record of a file
@READ SVC-67 Read a file record
@REW SVC-68 Rewind a file to its beginning
@RREAD SVC-69 Reread the last sector read
@RWRIT SVC-70 Rewrite the last sector written
@SEEKSC SVC-71 Seek a record of a file
@SKIP SVC-72 Skip the next record of a file
@VER SVC-73 Write then verify a file record
@WEOF SVC-74 Directory update a file's end-of-file
@WRITE SVC-75 Write a file record
7.5.6 File Control
Name Svc # Purpose
@RENAM SVC-56 Rename a file on disk
@REMOV SVC-57 Remove a file from disk
@INIT SVC-58 Open a new or existing file
@OPEN SVC-59 Open an existing file
@CLOSE SVC-60 Close an open disk file
@LOAD SVC-76 Load a program file
@RUN SVC-77 Run a program given its filespec
@FSPEC SVC-78 Fetch and parse a file specification
@FEXT SVC-79 Fetch a default file extension
@FNAME SVC-80 Obtain filespec given DEC and drive
7.5.7 System Control
Name Svc # Purpose
@IPL SVC-00 Reboot the system
@VDCTL SVC-15 Various video control functions
@PAUSE SVC-16 Delay execution for a time period
@ABORT SVC-21 Abnormal program exit
@EXIT SVC-22 Exit program with return code
@CMNDI SVC-24 Interpret and execute a command
@CMNDR SVC-25 Execute a command and return
@ERROR SVC-26 Post an error message
@DEBUG SVC-27 Enter system DEBUG package
@HIGH$ SVC-100 Obtain or alter HIGH$/LOW$
@FLAGS$ SVC-101 Obtain system flags pointer
@BANK SVC-102 RAM bank switching
@BREAK SVC-103 Establish vector
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