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

7.6.48 @KLTSK SVC-32
This SVC will remove the task assignment from the task table and return to the foreground
application that was interrupted when called by an executing task driver. See Chapter 8,
the Appendix, section on TASK PROCESSING for detailed information.
Registers Affected: Not applicable..
7.6.49 @LOAD SVC-76
This SVC will load a program file (a file in load module format).
Registers Affected: AF, B, HL.
Entry:
DE FCB containing the filespec of the file to load.
Exit:
HL Will contain the program's transfer address if no error is detected during
the load; otherwise it will contain the error return code.
Z Set if the load was successful.
7.6.50 @LOC SVC-63
This SVC will calculate the current logical record number for the file referenced.
Registers Affected: AF, BC.
Entry:
DE A pointer to the FCB for the file to check.
Exit:
BC Returns the current logical record number.
A Error return code if an error is encountered.
Z Set if the operation was successful.
7.6.51 @LOF SVC-64
This SVC will calculate the logical record number where an end-of-file (EOF) error would
be encountered for the referenced file.
Registers Affected: AF, BC.
Entry:
DE A pointer to the FCB for the file to check.
Exit:
BC Returns the EOF logical record number.
A Error return code if an error is encountered.
Z Set if the operation was successful.
7.6.52 @LOGER SVC-11
This SVC will issue a log message to the Job Log device (*JL). The "message" is any
character string terminating with an (X'0D'). The current time string will be
automatically prefixed to the message.
Registers Affected: AF, DE.
Entry:
HL A pointer to the message line to log.
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