Exchange/SNA Manual

WRITE Procedure
Exchange/SNA System Procedure Calls
104700 Tandem Computers Incorporated 5–23
If your program has no more than one outstanding nowait I/O operation against a
single file at one time, you can omit this parameter. In this case, the file number
returned by AWAITIO uniquely identifies the I/O operation that was completed.
If you opened the line server for wait I/O operations, omit this parameter.
Considerations The WRITE procedure writes a record from your program to the specified subdevice
for transmission to the host. You can also use the WRITEREAD procedure to do this.
For information on using WRITEREAD, see the WRITEREAD procedure later in this
section.
If you opened the Exchange/SNA line server for nowait I/O, you must call AWAITIO
to complete an I/O operation initiated by a call to WRITE. If you specify a time limit
on the AWAITIO call, make sure it is long enough to account for a slow response time
on the host. You should also ensure that the time limit is longer than the value of the
SET THROTTLE parameter.