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Exabyte EXB-8205 Instruções de Operação Página 260

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Format of SCSI Instruction Trace Table
As shown in Figure 16-1, the first 256 bytes of the trace dump include
information about SCSI commands that have been issued to the CTS.
Eight hexadecimal characters (four bytes) are returned for each
command.
The first two characters or
first byte (F
n
):
Indicate the SCSI ID (
n
)ofthehost
issuing the command.
The second two characters or
second byte:
Indicate the command’s OP code in
hexadecimal form.
The third two characters or
third byte (E
n
):
Indicate the SCSI ID (
n
)ofthehost
receiving the returned status.
The final two characters or
fourth byte:
Indicate the returned status in
hexadecimal form.
In the example shown above, F700E702 on the first line indicates that
host 7 (F7) issued a TEST UNIT READY command (OP code 00h) and
received Check Condition status (02h). Similarly, F416E400 at the
beginning of the fifth line indicates that host 4 issued a RESERVE
UNIT command (OP code 16h) and received Good status (00h).
Note: Refer to Table 2-2 for a list of SCSI commands in OP code
order. Refer to Table 2-3 for the hexadecimal values for the
returned status.
Note that the command information in the SCSI instruction trace table
is listed in chronological order, with information about the most
recently issued SCSI command listed last. For this reason, the
RECEIVEDIAGNOSTICRESULTS(1Ch)commandthatresultedin
the trace dump is always listed last (F71C at the end of the last line in
Figure 16-1), and it does not include a returned status.
000000000000000000000000F700E702F712E700F716E700F71AE700F715E700
F701E700F70AE700F710E700F70AE700F70AE700F70AE700F70AE700F710E700
F717E700F600E602F61AE600F616E600F60AE600F60AE600F60AE600F60AE600
F60AE600F60AE600F60AE600F60AE600F60AE600F617E600F400E402F412E400
F416E400F401E400F408E400F408E402F408E400F408E400F716E700F71DE700F71C
Figure 16-1 Example SCSI instruction trace table
16-8
EXB-8205 and EXB-8505
(Standard and XL)
510503
16 RECEIVE DIAGNOSTIC RESULTS (1Ch)
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1 2 ... 255 256 257 258 259 260 261 262 263 264 265 ... 445 446

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