Guardian Programming Reference Summary for C

SETMODE Operations
Guardian Programming Reference Summary for C—522630-001
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162 Override System Compression Default on 5190 Cartridge Tape
param1
= 1 No data compression
= 2 Data compression (DRC)
The param2 parameter is not used with function 162.
Users of unlabeled tapes who do not want to use the default compression setting
can use SETMODE 162 to override the default setting. BACKUP and FUP do
not support this operation. This operation is allowed only at the beginning of
tape (BOT). For more information about the 5190 Cartridge Tape Subsystem,
refer to the 5190 Cartridge Tape Subsystem Manual.