All switches need to be set to the ON position. With switches 1 & 2 set to the ON position, data compression is controlled by software.
HP DAT Drive Dip Switches
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Switch 1 & 2 - Control compression
Switch 3 - Enable/disable MRS tape recognition
Switch 4 - 7 - No information at this time
Apple Change History
22 May 1997 - Updated text format for TIL.