TOPS-10 Monitor Calls Manual Volume 2 AA-K039D ... - Trailing-Edge

FILOP. [CALLI 155]
15 . FOPRE
Preallocates space for the file described by the
LOOKUP/ENTER block. This function is most useful
for batch jobs. If a preallocated file is entered
but not written, the space is still allocated; a
CLOSE for the file will not deallocate the space.
If the file is entered immediately after being
preallocated, it is not superseded; any subsequent
ENTER to the file will supersede it. The
LOOKUP/ENTER block pointer is required for the
.FOPRE function.
16 .FOSIO
Opens a device for super-I/O (refer to the
SUSET. UUO). The first four words of the argument
list are required for this function. This
function does not require .FOLEB.
17 .FOINP
Performs INPUT monitor call. Reads data from
file opened on the specified channel.
argument list is:
the
The
addr:
XWD
addr1
addr2
channo, . FO INP
In the argument list:
o
addr1 is the address of the next buffer to be
used in non-dump I/O, or the address of the
dump mode command list if using dump I/O.
This word is optional for non-dump I/O.
o addr2 is the optional address of a word
containing the block number of the file to
perform a USETI to before writing.
20 . FOOUT
The I/O status bits are returned in the ac.
Performs OUTPUT monitor call. writes data ·to
file opened on the specified channel.
argument list is:
the
The
addr:
XWD
addr1
addr2
channo, . FOOUT
In the argument list:
o
addr1 is the address of the next buffer to be
used in non-dump I/O, or the address of the
dump mode command list.
o addr2 is the optional address of a word that
contains the block number of the file to
perform a USETO to before reading.
21 .FOSET
The I/O status bits are returned in the ac.
Performs SETSTS monitor call. The forma~ of the
argument list is:
addr:
XWD
EXP
channo, .FOSET
setsts-bits
This function returns error code %ERILU if the
argument block is not exactly two words long.
22-149