User's Guide

Chapter 3 Emulated DLT7000 SCSI Commands
Test Unit Ready (00h)
268 Quantum DX-Series Software Interface Guide
Test Unit Ready (00h) 3
The TEST UNIT READY command checks the tape drive to ensure that
the unit is ready for commands involving tape movement. If the drive has
a tape loaded, the command returns a GOOD status. Otherwise, CHECK
CONDITION is reported.
Due to power cycle, code update, and tape loaded conditions, it is
possible to get multiple check conditions on a TEST UNIT READY
command.
Table 217 TEST
UNIT READY
Command Descriptor
Block - Data Format
Bit/Byte 7 6 5 4 3 2 1 0
0
1
2-4
5
Operation Code (00h)
Logical Unit Number Reserved
Reserved
Unused Reserved
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