Guardian Programming Reference Summary for C

SETMODE Operations
Guardian Programming Reference Summary for C—522630-001
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57 Disk: Set serial writes option
param1
= 0 system automatically selects serial or parallel writes (default).
= 1 change the file label default value of the serial writes option.
Theparam2 parameter is used with DP2 disk files only.
param2
= 0 change the open option setting of the serial writes option (default).
= 1 change the file label default value of the serial writes option.
59 Return count of bytes read
param1 = count of actual bytes read
param2 = 0
66 Tape drive: Set density
param1= 0800 BPI (NRZI)
= 1 1600 BPI (PE)
= 2 6250 BPI (GCR)
= 3 as indicated by switches on tape drive
Theparam2 parameter is not used with function 66.
67 AUTODCONNECT for full-duplex modems: Monitor carrier detect or data set
ready
param1
= 0 disable AUTODCONNECT (default setting).
= 1 enable AUTODCONNECT.
Theparam2 parameter is not used with function 67.
68 Line printer (subtype 4): Set horizontal pitch
param1
= 0 normal print (default)
= 1 condensed print
= 2 expanded print
Theparam2 parameter is not used with function 68.
71 Set transmission priority. Transmission authority is used by an Expand process
to determine the ordering of messages for transmission on an Expand path. This
operation indirectly invokes the network utility process, $ZNUP, on a remote
system to get information before the request can be serviced.
Theparam1 parameter is not used with function 71.
param2 bits 0-7 = 0 (reserved)
Bits 8-15 = transmission priority
The transmission priority value can range from 0 through 255. A value of 0 (the
default) causes the processor priority of the process to be used as the
transmission authority. The lowest priority is 1; the highest priority is 255.
Once a path is selected, the Expand process processes the highest-priority
message first.