User`s guide

FRUN
— When you are finished running your foreground job so that the memory
reserved for it is freed for your background use.
FRUN Runs REL or SAV Jobs
Note that you can use the FRUN command to run a virtual SAV (image) foreground
job on a mapped monitor.
Running a Foreground Job in a Completely Virtual Environment
To run a foreground job in the completely virtual environment, use the SRUN
command in the following format:
FRUN SY:VBGEXE.SAV[/NAME:prgnam][/options]
If you do not specify /NAME:prgnam, VBGEXE prompts with "Program?". Enter a
file specification at the prompt to indicate the file to be run as a completely virtual
system job. The default file extension is SAV. If you omit the device specification,
VBGEXE tries to find the save-image file on the system device. If it cannot find the
file there, it tries to find the save-image file on the default data device.
Options
/BUFFER:value
Reserves more space in memory than the actual program size. The value
argument specifies the octal number of words in memory to allocate.
Virtual Jobs
If you use /BUFFER for a virtual job linked with the /V option (or /XM), RT–11
ignores /BUFFER because it has already provided a buffer in extended memory.
FORTRAN IV Foreground Jobs
You must use this option to execute a FORTRAN IV foreground job.
The following formula determines the space needed to run a FORTRAN program
as a foreground job:
n = [[504+(35*N)+(R-136)+A*512]/2]+[10*qcount]+[6*num]+[25*INTSET]+[64+R/2]
where:
A Specifies the maximum number of files open at one time. Each
file opened as double buffered should be counted as two files.
N Specifies the maximum number
10
of simultaneously open
channels (logical unit numbers). This value is specified when the
compiler is built and can be overridden with the /UNITS option
during main program compilation; the default value is 6. Make
sure you use a decimal point with this number.
RT–11 Command Descriptions 139