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SCSI-2 Drive Command Set

Mode Sense (Group 0) Command (1AH)

Chapter 2 2-71

SCSI-2 Drive Commands

Quick

Disconnect A Quick Disconnect bit of 1 enables SCSI bus

disconnection before command validation on

performance path commands (i.e. reads, writes).

A Quick Disconnect bit of 0 disables SCSI bus

disconnection before validation on performance path

commands (i.e. reads, writes).

The Quick Disconnect default setting is 0.

Force Verify A Force Verify bit of 1 indicates that all write operations

will be verified. The Write 6-, 10-, and 12-byte

commands will operate as if they were Write Verify 6,

10, and 12-byte commands.

A Force Verify bit of 0 indicates normal operation.

The Force Verify default setting is 0.

Bytes 4 and 5 Bytes 4 and 5 are used to read the setting of the DIP

switches on the drive. SX-Y refers to the setting of DIP

switch S50X-Y (see Figure 2-1 on page 2-51 and

Table 2-44 on page 2-51). If SX-Y=0, the switch is set to

the OFF position; if SX-Y=1, the switch is set to the ON

position. These fields are not changeable. The switch

setting value overrides the saved value.

DOM A drive operating mode of 0 indicates that the drive is

installed in a jukebox environment. A DOM bit of 1

indicates that the drive is installed in a stand-alone

environment.

NOTE The DOM bit is not selectable using the Mode Select command.

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