Chapter 2 — Decoder Command Set Guide
115
TEST UNIT READY (OpCode 0x00, 6 bytes)
Parity Errors during Data phase
The decoder will complete the data transfer containing the parity error. The decoder
will return a Check Condition with the sense data set to “Recovered error, SCSI
parity error.”
Overlapped Commands
The SCSI interface supports only one command (I/O process) per LUN at a time.
If more than one command is sent to the same LUN, and error is generated. On
receipt of the second command on the same LUN, the decoder will return a Check
Condition with the sense data set to:
Execution of both commands will be aborted.
TEST UNIT READY (OpCode 0x00, 6 bytes)
The
TEST
UNIT
READY
command always returns Good status, except after power-
up, SCSI Reset, or Bus Device Reset. Command format:
SCSI Status
Check Condition
Sense Key
01h
Additional Sense Code and Qualifier
4700h
SCSI Status
Check Condition
Sense Key
0Bh (Aborted command)
Additional Sense Code and Qualifier
4E00h (Overlapped cmds attempted)
Table 2-26.TEST UNIT READY Command Format
Summary of Contents for 2000-0600
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